Allow changing of the leave key of keyboard

I had to add an extra net message to resolve the key name, because the
required library(input) is not available on the serverside.
If there is a more elegant way, I'll change it up.

Closes #225
Merge pull request #227 from Xandaros/patch-1

Allow changing of the leave key of keyboard
Holograms: Fixed scaling bone'd models only changing one bone
Individual bone positions are inconsistent, so human ragdolls are gruesome
Fixes #221, the models he listed at least
Keyboard: Fixed stack overflow when exiting vehicles
Fixes #230
Keyboard: Fixed blocking of mouse buttons
Fixes #231
Tools: Made model selectors larger, removed useless desc's
Refactoring:
Converted more stools CPanel's from AddControl's to the shorter DForm functions
Moved Hoverdrive and Turret models from stools to cl_modelplug.lua
Removed the list "wire_radio2_models", it was identical to "wire_radio_models"
Wire, Wire Adv, Winch, Hydraulic: Fixed material selector
[E2] Holograms - save scale on entity
should help with the weird scale reset bug on big lag

+ make vis_buffer more buffer like .)
Merge pull request #234 from natrim/master

[E2] Holograms - save scale on entity
Holograms: Fixed scale not setting on reconnect
#234